Based on the push-and-pull theory, this paper analyzes the factors that influence the final realization of the mid and low class's flexible employment.
2
他们把他们的理论叫做“海底扩张”。这个理论解释了,随着海底扩张,板块在不同的方向上被推拉。
They called their theory "sea floor spreading." the theory explains that as the sea floor spreads, the tectonic plates are pushed and pulled in different directions.
3
本文论述了利用智能推拉技术设计开发个性化主动信息服务系统的理论与实践。
This article discusses the theory and practice on developing the IIPP-based active information service system to better fulfill the user's individualized requirements.